klees



(No Model.) 2 Sheets-Sheet 1. J. A. KLEES. DUMPING WAGON.

No. 449,265. Patented Mar. 31,1891.

(No Model.) 2 Sheets-Sheet 2.

J. A. KLEES. DUMPING WAGON.

No.449,255. V Patented Mar.31,1891.

n4: uonms versus co, mow-mum, wmmarau, a. c,

UNITED STATES PATENT OFFICE.

JAMES A. KLEES, OF READING, PENNSYLVANIA, ASSIGNOR TO THE KEYSTONE WAGONCOMPANY, or SAME PLACE.

DUMPlNG-WAGON.

SPECIFICATION forming part of LettersPatent No. 449,265, dated March 31,1891.

v 7 Application filed November 22, 189D. Serial No. 372,319. (No model.)

To all whom it may concern:

Be it known that I, JAMES A. KLEES, a citizen of the United States,residing at Reading, in the county of Berks,State of Pennsylvania, haveinvented certain Improvements in Dumping-Wagons, of which the followingis a specification.

I-Ieretofore dumping-wagons havebeen constructed in which the wagon bodyor bed has IO been raised by means of elevating-arms pivoted at one endto the running gear or frame and at the other to the movable bed, andthe connection between the bed and the frame has been so arranged as toeither elevate the bed bodily, or either end of it independently orinsuccession.

The main object of my invention is to provide an improved constructionwhereby the wagon-bed may be raised by the continued operation of asingle mechanism to the most advantageous heights and angles possiblefor different conditions. In dumping coal, for instance, the height t0which it is advisable to raise the bed varies greatly. Where thecellar-hole is in the pavement butashort distance from the curb, it isunnecessary to raise the rear of the bed at all, and the front need onlybe lifted to secure a proper angle for dumping. Where thecellar-openingis on the 0 ordinary building-line, it is usually.necessary to raise the bed at both ends, but not to so great a height asis necessary where the cellaropening is set back to more than theordinary distance from the curb or where it is at an elevation. By meansof my improved construction the front of the wagon alone is first raiseduntil a proper angle for quick delivery to a short distance is reached.By continuing to operate the same lifting mechanism the rear end of thebed begins to rise, without, however, discontinuing the elevation of thefront, so that the bed maybe raised bodily to the extreme limit providedfor.

The invention is more fully described in 5 connection with theaccompanying drawings, illustrating a preferred construction, and isspecifically pointed out in the claims.

Figure 1 is a side elevation of a portion of View showing the wagon-bedin elevated position.

A represents the frame of the running-gear to which the wagon body orbed B is movably connected by means of elevating-arms D, one on eitherside of the wagon, the rear end of which is pivoted to the frame A at apoint (1 behind the back axle C, while its forward end is pivoted to thebed B at a point (1 forward of its normal centerof gravity 7). As ameans of lifting the forward end of the elevatingbars and with them-thebed 13, I have represented them as provided with segment-rack extensionsd united with the main arm by a brace d curved to clear the axle O, infront 6 5 of which they are lowered with the wagonbed, the rack gearswith a pinion 5, forming part of a multiplying gear 1 2 3 4t 5, securedto one side of the frame and operated by a crank G. It is evident,however, that other well-known mechanism may be readily substituted, ifpreferred.

At a point a of the frame B is pivoted on each side e a stay-bar E, theforward end e of which rides loosely in a carrier F, forming part of thewagon-bed. To the rear end of the frame is secured a locking device H,consisting, as shown, of a folding arm, which is perforated to adjustably engage a projection 19 on the wagon-bed.

In Fig. 1 the wagon-bed is shown in its normal position, restingdirectly on the frame A. The forward ends a of the stay-bars E areloosely supported in the carriers F, and the K locking-arm II is foldedagainst the side of the frame at the rear. Upon turning the crank G thewagon-bed B is raised by the arm D; but as its connecting-point (1 isforward of the center of the bed the rear portion overbalances theforward portion, so that the bed tends to turn on the point ofsuspension 01', thus raising the forward portion, while the rear endkeeps at its lowest point, as indicated by the dotted lines in Fig. 1.The free ends of the bars E are carried upward with the forward end ofthe bed, riding freely in the carriers F, which allow them sufiicientlongitudinal movement to reach the height indicated by said dotted lineswithout restraint. At this point, however, the move- 10o ment of theends a of the stayebars F with relation to the bed B is stopped by theend f of the carriers F, and the continued operation of the crank G willevidently raise not only the front of the bed, but the rear also, andthe latter the more rapidly, inasmuch as the front can only raisethereafter as much as will be effected by the movement on the .p'ivotalpoints 6 resulting from the horizontal movement of the bed as it swingson the pivotal centers (Z of the lifting-arms. It is evident, therefore,that while both front and rear are now raised the latter is constantlygaining on the former, so that as the height from the frame increasesthe angle of the bed decreases, as is shown in Fig. 2, where the bed isrepresented in full lines, at about its maximum height, and in dottedlines at a less height, the angle of the bed thus slowly .de-:

creasing from the maximum angle (shown in dotted lines in Fig. 1) as thetotal height in- On consideration it will be seen that this is exactlywhat is required in service, as the angle must necessarily besacrificedwhere the point to be reached by :the-

delivery-chute is at a considerable distance or elevatlon, while atnearer or lower points the advantage of a greater incline is secured.

In other words, theheight to which it ispracticable to raise the bedbeing limited, the angleor incline must be sacrificed, as the limit ofits capacity for delivery is approached.

It will be noticed that by my improved construction I can thereforesecure the best attainable angles for different elevationsautomatically, no adjustment of angle whatever being required but thecontinued operation of a single crank raising the bedtopractically themost advantageous position for any given height from the lowest to themaximum. The proportions and location of parts may of course be readilyvaried, so as to changethe angles more or less rapidly, as desired.

The locking mechanism I-I (shown in the drawings at the rear of theframe) is provided to maintain the wagon-bed at the angles selected fordumping, inasmuchas the forward end is apt to overbalance the rear aftera ;portion of the load has been removed from the latter unless the bedis locked until the whole load is discharged.

Having thus fully described my invention, I do not limit myself to theparticular construction specifically described and illustrated; but

VVhat I claim is- 1. A dumping-wagon provided with an elevating arm orarms and a pivoted stay operating in connection therewith, substantiallyas described, whereby the wagon-bed is elevated automatically, first atthe front and thereafter at front and back simultaneously, by thecontinued operation of said arm, substantially as set forth.

2. In a dumping-wagon having elevatingarm s pivoted to the Wagon-bedat apoint forward of its center, mechanism for lifting said arms, andpivoted stays having their free ends loosely carried for a limiteddistance by the front portion of the wagon-bed, whereby said frontportion is first raised alimited distance alone and thereafter the wholebody by the continued operation of said lifting mechanism, substantiallyas set forth.

3. In a dumping-wagon, the combination, with the frame, of the movablebed connected therewith by elevating-bars pivoted at their rear endsnear the rear of the frame and at their front ends to the bed forward ofits center, and the stays pivoted at their rear ends to the frame andhaving their forward ends loosely carried for a limited distance by theforward end of the bed and adapted to serve thereafter as afulcrum forelevating the rear end, substantially as set forth.

4. Ina dumping-wagon having an elevating- .arm pivoted to the wagon-bedat a point forward .of its center and mechanism for lifting said arm,the pivoted stays having their .free ends carried for a limited distanceby the front end of the Wagon-bed, and a locking mechanism to preventtiltingof said bed when raised, substantially as set forth. r

5. In a dumping-wagon, the combination, with the frame A and movable bedB, of .elevating-arms D, multiple gearing for operating said arms,pivoted stays E, carriers ,F for said arms, and a locking mechanism I I,allar-ranged and adapted to operate substantiallyas 'set forth. 7

In testimony whereof I affix my signature in presence of two witnesses.f JAMES A. KLEES.

Witnesses:

IOC

